Have you ever wondered why some low-voltage (115-V) power-consuming devices burn out too often? It could be because they are wired to a “high” or “wild” power leg of a voltage supply. These devices ...

Wye or “star” service transformers are one and the same. The names come from the secondary winding configuration, which looks like a “Y” or three-sided star (Figure 1). For the remainder of this ...

While working at a sewage treatment facility, I ran across an interesting situation with a 30kVA transformer. I had bid on a replacement generator job and was given a set of drawings to work from, ...

In a thermally enhanced, 16-lead TSSOP-16E, the LT3439 1A, isolated push-pull dc/dc transformer handles inputs from 2.8V to 17.5V to drive an external center tapped transformer. Actual output voltage ...

Similar to feeder taps, covered in the last issue, transformer secondary conductors can be every bit as confusing. Let's take a closer look at 240.21(C) to help clear up any misconceptions. As with ...

Here is a simple 12 volts DC to AC inverter circuit. This 120V AC power source is built with a simple 120V:24V or 110V:24V center-tapped control transformer and four additional component. This circuit ...